Open-loop-based Island-mode Voltage Control Method for Single-phase Grid-tied Inverter with Minimized LC Filter

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2019/01/01

タイトル(英語): Open-loop-based Island-mode Voltage Control Method for Single-phase Grid-tied Inverter with Minimized LC Filter

著者名: Satoshi Nagai (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

著者名(英語): Satoshi Nagai (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

キーワード: grid-tied inverter，island-mode，minimized LC filter，open-loop-based voltage control

要約(英語): This paper proposes an island-mode voltage control method using an open-loop control that applies a high-gain disturbance observer (DOB) for a single-phase inverter with a low-capacitance output filter. The output voltage is distorted with low capacitance obtained from the conventional method that consists of a PID regulator for an automatic voltage regulator and a PI regulator for an automatic current regulator. To compensate for the output voltage distortion, the high-gain DOB for the output voltage is applied for open-loop-based voltage control. DOB is implemented into a field-programmable gate array with high-speed sampling. In the LC filter of a 1-kW prototype, the impedance of the inductor is minimized to 1.0% of the normalized inverter impedance, whereas the admittance of the capacitor is reduced to 0.25% of the normalized inverter admittance. Using the proposed method, the inverter output voltage total harmonic distortion is reduced by 82.4% even with the diode rectifier load compared to conventional voltage control, whereas the constant output voltage is achieved regardless of load conditions.

本誌: IEEJ Journal of Industry Applications Vol.8 No.1 （2019）

本誌掲載ページ: 108-115 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/8/1/8_108/_article/-char/ja/